Railway-frog.



PATBNTED DEC. 2Q, 1903.

E. B. BNTWISLB. RAILWAY PROG.-

PPLIOTION FILED JUNE 5, `1902 QM Arron/ver.

l UNiTED l STATES Patented December 29, 1903.

PATENT OFFICE.

EDWARD B. ENTWISLE, OE JOHNSTOWN, PENNSYLVANIA, ASSIGNOR TO- THE LORAIN STEEL COMPANY, A CORPORATION OE PENNSYLVANIA.

RAILWAY-FROG.

SPECIFICATION forming part of Letters Patent No. 747,955, dated December 29, 1903.i

Application filed June 5, 1902. Serial No. 110,288. (No model.)

To a/ZZ whom, it Wfl/Cty concern.-

Be it known that I, EDWARD B. ENTwIsLE, of Johnstown, in the county of Cambria and State of Pennsylvania, have invented a new and useful Improvementin Railway-Frogs, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, which form a part of this specification.

1o My invention has relation to certain new and useful improvements in frogs for railway-tracks, and .more particularly to T-rail frogs. K

As is well known,the parts of a frog which I5 are subject to the greatest wear in service are the point and those portions of the wingrails adjacent to and slightly in advance of the point which receive the blows of carwheels as the latter pass from the point to zo the wing-rails. It is the object of the present invention to provide a frog in which these parts are formed by a solid piece or block of a material more durable in its nature than the material of the remaining portions of the structure and which can be readily removed and replaced at any time, if necessary.

To this end my invention consists in afrog having both its wing-rails adjacent to the point bent or kinked outwardly to carry their 3o heads some distance outside of the gage-,lines of the frog and recessed to form a seat for a solid block of hard steel or steel alloy, upon the surface of`which are formed the flangeways and also the point of the frog and also portions which replace the displaced and recessed portions of the wing-rails. This block is secured in place by bolts extending through it and through the wing-rails and forms a solid chock or filler, as well as a track member, capable of enduring the destructive conditions to which it is subjected in service.

My invention also consists in the novelconstruction and combination of parts, all as hereinafter described, and pointed out in the appended claim, reference being had to the accompanying drawings, in which- Figure l is a plan view of a frog embodying my invention, and Fig. 2 a transverse section thereof on the line 2 2 of Fig. 1.

The letters A A designate `the point or tongue-rails, and B B the wing-rails, of the frog. The latter are bent outwardly from a point near the throat of the frog to a point somewhat beyond the frog-point, as shown at b, and the inner portions of their heads are out away, as shown at c. The point end of the rail A is also cut olf. There is thus formed between the wing-rails a seat for a solid block or piece D, having triangular raised portions d upon each side of a fiange- 6o way d, which fill the spaces formed by the outward ben-ding and cutting away of the rails, also a raised portion d2, which takes the place of the cut-away end of the rail A and forms the point of the frog. It will be noted that the portions d have their greatest width a short distance in advance of the ,point at the places where they are subject to the hardest blows 4and greatest wear, due to car-wheelsl passing onto and olf from the point-rails. 7o i While the block D may be made in any suitable manner from hard steel or steel alloy, I prefer to cast it of steel. It is rigidly secured in place by means of bolts E, whichJ extend therethrough and through the wingrails and which can be removed at any time to permit the block to be removed should it become unduly worn or defective. The seats for the bolts E may be cored in the block when it is cast. 8o

F F designate chocks which are placed between the wing-rails and the point-rails. These may be formed integrally with the block C; but, as shown, they consist of separate pieces of cast-iron. 85

It will be noted that not only does the block D constitute those portions of the frog which are subject to the severest wear, but it also forms a solid chock or filler to which the wing-rails may be securely fastened and 9o makes the frog a very rigid structure composed of but few parts. Y

The wing-rails may be bent sutticientlyto seat the said block without cutting the inner portions of their heads; but as this would re- Y quire either the formation of short outward kinks or bends of the wing-rails at ends of the triangular portions d or else the reduction of said portions to an undue thinness I prefer the construction shown. I do not,` ico however, wish to limit myself thereto, as various changes may be made in the details with- 1o tion out away, of the solid block or filler secured between the Wing-rails and having portions which replace the displaced portions of the wing-rails and also the out-away portion of said long-point rail.

In testimony whereof I have affixed my sigl5 nature in presence of two witnesses.

EDWARD B. ENTWISLE. Witnesses:

GEO. H. PARMELEE, H. W. SMITH. 

